diff --git a/tests/cli/13_test_stack.py b/tests/cli/13_test_stack.py
index 26acf95..fbecf58 100644
--- a/tests/cli/13_test_stack.py
+++ b/tests/cli/13_test_stack.py
@@ -8,49 +8,41 @@ class CliTestCaseStack(test.WOTestCase):
         self.app.setup()
         self.app.run()
 
-
     def test_wo_cli_stack_install_nginx(self):
         self.app = get_test_app(argv=['stack', 'install', '--nginx'])
         self.app.setup()
         self.app.run()
 
-
     def test_wo_cli_stack_install_php(self):
         self.app = get_test_app(argv=['stack', 'install', '--php'])
         self.app.setup()
         self.app.run()
 
-
     def test_wo_cli_stack_install_php73(self):
         self.app = get_test_app(argv=['stack', 'install', '--php73'])
         self.app.setup()
         self.app.run()
 
-
     def test_wo_cli_stack_install_mysql(self):
         self.app = get_test_app(argv=['stack', 'install', '--mysql'])
         self.app.setup()
         self.app.run()
 
-
     def test_wo_cli_stack_install_wpcli(self):
         self.app = get_test_app(argv=['stack', 'install', '--wpcli'])
         self.app.setup()
         self.app.run()
 
-
     def test_wo_cli_stack_install_phpmyadmin(self):
         self.app = get_test_app(argv=['stack', 'install', '--phpmyadmin'])
         self.app.setup()
         self.app.run()
 
-
     def test_wo_cli_stack_install_adminer(self):
         self.app = get_test_app(argv=['stack', 'install', '--adminer'])
         self.app.setup()
         self.app.run()
 
-
     def test_wo_cli_stack_install_utils(self):
         self.app = get_test_app(argv=['stack', 'install', '--utils'])
         self.app.setup()